I can't see the screen shot, but can you comment on what you might be doing on the phone? Which apps you use having during the period you see heavy battery drain, etc
Personally, I saw slightly heavier battery drain than prior to the 7 update, where the phone will have about 15% left after about 15 house unplugged. That's with average use, such as checking emails, amazon app usage, light Tapatalk use, and general web browsing, but all in general light use. I'd say after about 2 weeks, that went away and battery drain is general normal for me again, where it's be about 35% after a similar 15 hour period.
Without knowing the logic behind his Doze works, I assume it's collected enough usage data to determine how to conserve battery after the 2 week period of having 7 installed.